Sorry for bump, just having another two questions:
1: I got clutter masks to work, but I'm wondering - do they support multiple clutter groups? I have tested giving it both speedway01 / exampleclutter tags, but it will only use the first one. I have double checked that the clutter map actually has different colors, but I guess I just need to find out where to "tag" that second clutter group.
2: Does blend materials in Wreckfest support 4 textures? I have exported some interesting splatmaps which has the RGB textures, but as well has a 4th texture in the alpha channel as black color. How would I go about using all 4?